The percent change from the first value to the second is 75 % increase
Solution:
Given that find the percent change from the first value to the second 40 and 70
To find: percent change
Percentage change equals the change in value divided by the absolute value of the original value, multiplied by 100.

If the result is positive, it is an increase
If the result is negative, it is an decrease
Here initial value = 40 and final value = 70



Thus the percentage change is 75 % increase